let list = {"1": [{'k1': 'value1', 'k2': 'value2'}], "2": [{'k1': 'value3', 'k2': 'value4'}] };

let key = "1";
console.log(typeof key);
console.log(typeof 1);
console.log(list["1"]);
console.log(list[1]);
console.log(list?.[1]);
console.log(list?.["3"]);
console.log(list["3"]);


console.log("1".repeat(10));